I agree with thedeadlymoose. It's a supercomputer that can do more computation than its hardware should allow, and it kills people who interfere with it. Sure it's dangerous and anomalous, but it's still a bit ho-hum. Maybe you can increase the interest level by going into more detail of what it's computing.

There's also a few grammar corrections that need to be made:
"anomalous properties have been discovered" -> "were discovered"
"Attempted to remove SCP-XXX from the power supply" -> "Attempts to remove"

I also suggest that the Foundation would not use SCP-XXX for themselves because they wouldn't trust the results.

Thanks for the feedback! Unfortunately this means that I tried to be so subtle I have outsmarted myself and failed to get the real creepy part through to the reader. Back to the drawing board! I will try to come up with some additional passages to try and fix this.

EDIT: Changed the SCP. I am still trying not to spell everything out and ruin it but I am still unsure if there is enough info there to hint at where I am getting. If the point that is coming across is that it screws with people as a defense mechanism I am doing it wrong.

@TheBigH: As far as I have read so far, the Foundation usually tries to use the SCPs when possible and for most simulations you can tell if the result is correct or not [usually you already have a pretty good idea what to expect and are trying to get assurances.] So I thought many of the scientists from the Foundation would jump at the idea of trying out their codes on a larger scale. Please correct me if I am wrong.

Yes.. that is the general idea… a recursive implementation. I don't think it has already been done here. But I am purposefully trying to keep the exact nature unclear. Do you have any ideas how I can improve the SCP without making it too obvious? What I am trying to get people to think about is who has started the simulation… what are the other tests? Can the simulation be modified?

Thank you for the feedback. I have done some modifications. The non-euclidian nature is in this case of secondary importance. Also I am going for more-dimensional rather than just bag of holding bigger on the inside. Tried to clear some details up.

So… I think the idea that a computer is simulating the world, and that computer is in the world it is simulating, is head-hurting enough to be interesting. But that's really subtle here, and that may be the point, but it's TOO subtle. Like, I didn't notice it until Holbenilord mentioned it subtle. Maybe if you take out expunges, give more detail about how this SCP affected the 'state' of the world. Or, maybe have a test log where researchers interacted with the world simulation and stuff got messed up.
On the note of unusual topology, there is an SCP that that's about 15% similar to, SCP-915. But it's not too similar.

Thanks a lot! Liked your idea, implemented it.
Interesting tip about 915 but I think the two are quite different, and the unusual topology has a different role, and is of a different sort.
I really think that the SCP is getting much better with the help of the feedback I am getting here. Definitely a better idea than trying to write directly :).So unless you're all getting bored, help is appreciated.

So.. I think I am satisfied with how it looks. Could anyone else express their opinions? Also, if others agree how does one go about adding it to the scp-list? Do I just take the lowest unused number? Thanks in advance.

Hm.. Apparently my communications skills are once again lacking… Can I pick any of the unused SCP numbers below 1000? I have read that guide but the information that one should only use numbers below 1000 is only on the SCP series page. Since I have found this relevant information not on the guide but somewhere else there is no way to be sure that I am not missing other crucial pieces of information. A question is better then a faux-pas, is it not?